/Engine/Plugins/Developer/Concert/ConcertMain/Source/ConcertTransport/Public/ConcertTransportMessages.h
[EConcertMessageFlags](API\Plugins\ConcertTransport\EConcertMessageFlags) & operator^= ( [EConcertMessageFlags](API\Plugins\ConcertTransport\EConcertMessageFlags) & Lhs, [EConcertMessageFlags](API\Plugins\ConcertTransport\EConcertMessageFlags) Rhs )